Solitonic Boson Stars: Numerical solutions beyond the thin-wall approximation
arXiv:2203.08203 · doi:10.1103/PhysRevD.106.084057
Abstract
In this paper we present several set of solutions of static and spherically symmetric solitonic boson stars. Each set is characterized by the value of σ that defines the solitonic potential in the complex scalar field theory. The main features peculiar to this potential occur for small values of σ, but for which the equations become so stiff as to pose numerical challenges. Without making approximations we build the sets for decreasing σ values and show how they change their behavior in the parameter space, giving special attention to the region where thin-wall configurations dwell. The validity of the thin-wall approximation is explored as well as the possibility of the solution sets being discontinuous. We investigate five different possible definitions of a radius for boson stars and employ them to calculate the compactness of each solution in order to assess how different the outcomes might be.
References in corpus (24)
- Kerr black holes with scalar hair
- Dynamical Boson Stars
- Echoes of ECOs: gravitational-wave signatures of exotic compact objects and of quantum corrections at the horizon scale
- Rotating Boson Stars and Q-Balls
- Gravitational Wave Signatures of Highly Compact Boson Star Binaries
- Imaging a boson star at the Galactic center
- How to tell an accreting boson star from a black hole
- Astrophysical signatures of boson stars: quasinormal modes and inspiral resonances
- Spinning Q-Balls
- Rotating Boson Stars and Q-Balls II: Negative Parity and Ergoregions
- On the final fate of compact boson star mergers
- Gravitational-Wave Signature of an Inspiral into a Supermassive Horizonless Object
- Stable Phases of Boson Stars
- Spherical Boson Stars as Black Hole mimickers
- On gravitational echoes from ultracompact exotic stars
- Circular Orbits Structure and Thin Accretion Disks around Kerr Black Holes with Scalar Hair
- Excited Boson Stars
- Iron K line of boson stars
- How does gravity save or kill Q-balls?
- From topological to non-topological solitons: kinks, domain walls and Q-balls in a scalar field model with non-trivial vacuum manifold
- On the Structure of Rotating Charged Boson Stars
- ECO-spotting: looking for extremely compact objects with bosonic fields
- Retrograde Polish Doughnuts around Boson Stars
- Tidal effects in the motion of gas clouds around boson stars